There are many ways to decode QR Code these days. Here is an attempt to detect QR Code in an image to manipulate within OpenCV. 1. Detection of QR Code Identification markers We start of the topic by discussing something that is not a part of this sample program. If you need to get on with it, you can skip directly to "Step 1". The first task is to identify reliable patterns in the QR Code as show
![OpenCV: QR Code detection and extraction](https://cdn-ak-scissors.b.st-hatena.com/image/square/2941470d309f09c2327e45ce31cd58ed93c2569f/height=288;version=1;width=512/https%3A%2F%2Fblogger.googleusercontent.com%2Fimg%2Fb%2FR29vZ2xl%2FAVvXsEgBn9XOOt_KoQtD1MSTnAmg4qMrwipQmRw9y_Uf0ifpau5qXgEZfqu6Nafz61r5aWfDOirpMiVzaFRJlBGyTkhMNXXCD2kzQnPIsiGuVaVupuKstgdTK489MtL3_K0FoMAI3Oh3Q7gblBk%2Fw1200-h630-p-k-no-nu%2Fblog_post.png)